Submittal Sheet

7800 SERIES S7800A2142 KEYBOARD DISPLAY MODULE
32-00110—05 6
KDM Display
The first line of the KDM display provides current status of the burner sequence (STANDBY, PURGE, PILOT IGN, MAIN
IGN, RUN and POSTPURGE), timing information (PURGE, PILOT IGN, MAIN IGN and POSTPURGE) in minutes and
seconds, hold information (PURGE HOLD), and lockout information (Lockout, Fault Code, Message and Sequence). The
second line will display selectable or preemptive messages. A selectable message supplies information for flame
strength, system status indication, system or self-diagnostics and troubleshooting. A preemptive message has
parentheses around the message and supplies a detailed message to support the sequence status information. A
preemptive message can also be a lockout message. A preemptive message replaces a selectable message to support the
sequence status information. The 7800 SERIES Relay Module LED provide positive visual indication of the Relay Module
sequence. The LED is energized simultaneously with the correct sequence description.
Fig. 3. Wiring Keyboard Display Module for remote mounting.
1
1
2
3
3
2
120 OHM
RESISTOR
1
120 OHM
RESISTOR
A B
A B
C (GND)
+13 VDC
RESET
C (GND)
+13 VDC
RESET
1
23
4
5
1
23
4
5
MOMENTARY
PUSH BUTTON
SWITCH
S7810 DATA CONTROLBUS MODULEª
(MOUNTED ON 7800 SERIES RELAY MODULE)
7800 REMOTE KEYBOARD DISPLAY MODULE
THREE WIRE SHIELDED CABLE MAY BE REQUIRED. TWO 120
OHM TERMINATING RESISTORS ARE REQUIRED FOR
CONNECTIONS OVER 100 FEET. CABLE SHIELD MUST BE
TERMINATED TO EARTH GROUND AT BOTH ENDS. IF SHIELDED
CABLE IS NOT USED, TWISTED PAIR WIRE MUST BE USED.
M5285C
WHEN CONNECTING THE KEYBOARD DISPLAY MODULE DATA
CONTROLBUS MODULEª, OR REMOTE RESET MODULE
EXTERNAL FROM THE CONTROL CABINET, APPROPRIATE
MEASURES MUST BE TAKEN TO MEET EN60730 SAFETY
LOW VOLTAGE REQUIREMENTS (SEE APPROVALS).
221818A OR C EXTENSION CAN BE USED IN PLACE OF THE
S7810 DATA CONTROLBUS MODULEª IF DISPLAY IS TO
A CABINET DOOR.